Dental plate.



WITNESSES H. J. SMITH.

DENTAL PLATE.

APPLIGATION FILED 111m, 1912.

COLUMBIA PLANDOHAPH ClL-VASHIN GGGGGGGG C Patented Apr. 23, 1912.

HENRY J. SMITH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 H. D. J US'II & SON, OF PHILADELPHIA, PENNSYLVANIA, A GOPARTNERSHIP.

DENTAL PLATE.

Specification of Letters Patent.

Patented Apr. 23, 1912.

To all whom it may concern:

Be it known that I, HENRY J. SMITH, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Dental Plate, of which the following is a specification.

My invention consists of an improved dental plate provided with a yielding suction-disk, held in position by a stud inclosed by a tapered shell, having a laterally extending flange, said shell having its lower end preferably embedded in said plate.

It further consists of improved means for renewably attaching a suction-disk to the late.

p It further consists of other novel features of construction, all as will be hereinafter fully set forth.

The annexed drawings and the following description set forth in detail one mechanical form embodying the invention, such detail construction being but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings :Figure 1 represents a plan view of the upper side of a dental plate provided with my improvement. Fig. 2 represents a transverse section of the finished denture with the suction-disk in place. Fig. 3 represents a transverse section of the plate with the suction-disk removed. Fig. 4 represents an enlarged section of the crown or roof-portion of the plate with the suction-disk in place. Fig. 5 represents a perspective view, partly in section, of said plate-portion, with the suction-disk removed. Fig. 6 represents a perspective view of the retainer shell or thimble. Fig. 7 represents a section on the line ww, in Fig. 6. Fig. 8 represents a perspective view of the suction-disk.

Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings, the reference numeral 1 indicates a dental plate suitably fitted to the mouth of the wearer in the usual or any approved manner. The plate is formed with a circular recess, 2, having a central circular depression, 3, from the center of which projects a downwardly tapering stud, 4, integral with the plate. Said stud is incased in a flaring and flanged shell, 5, of a non-corrodible metal, which shell and stud form a retainer, upon which a suction-disk, 6, of soft rubber may be buttoned by its central opening, 7. The flan e upon the retainer-shell holds the disk in place, and the lower end of the shell is embedded in the plate,the shell having been placed while the mold was packed with rubber and before vulcanizing the plate,-so that the stud is reinforced by the shell at its base. The flange of the retainer draws the center of the suction-disk down into the depression in the recess, thus causing the disk to take the required cup-shape. The disk may easily be removed from the retainer and another disk secured in its place without the use of any tools and without obliging the wearer to go to a dentist.

I am aware of the Patents No. 801,911 granted October 17th, 1905 and No. 821,192 granted May 22nd, 1906, the latter of which is for a suction cavity having a bottom as cending angle which I do not employ, while the former relates to a process and a product, which process I do not employ. My present invention is therefore differentiated from said prior art among other features by the employment of the tapering retainer having the tapering flanged shell thereon, and to none of the devices of the prior art do I herein make any claim.

Other modes of applying the principle of my invention may be employed for the mode herein explained. Change may therefore be made as regards the mechanism thus disclosed, provided the principles of construction set forth, respectively, in the following claims are employed.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A dental plate formed with a recess in its upper side having a central depression, and a retainer integral with the plate and in the center of the depression and having a downwardly tapering stud and a laterally projecting flange.

2. A dental plate formed with a recess in its upper side having a central depression, a retainer-stud integral wit-h said plate, and a metallic shell around said stud and formed with a flange around its upper end and having its lower end embedded in the body of the plate.

3. A dental plate formed with a recess in its upper side having a central depression, a downwardly tapering retainer-stud integral with the plate and projecting from the having a central opening fitted uponsaid recenter of the deprfisfiomf a (1OWI1W2lIc1d%))1 tainer.

ta erin retainer-s 'e 0 non-corro i e m tal i ncasing said stud and having its HENRYJ' SMITH lower end embedded in the plate and also Witnesses:

having a laterally projecting flange around C. D. MOVAY,

its upper end, and asoft rubber suction-disk I M. E. BYRNE.

Copies of this patent maybe obtained for five cents each, by addressing the Gommissioner of Patents, Washington, D. G. 

